Question

analyze the authors use of key terms
in april 1917 the illusion of isolation was destroyed. america came to the end of innocence, and of the exuberant freedom of bachelor independence.... to help ourselves manage the responsibilities of world power, we have replaced the illusion of isolation with a new illusion of omnipotence. that screen, too, must fall.
—\how we entered world war i,\ barbara tuchman
what does the authors first use of the key term illusion suggest about american foreign policy?
the united states causes many problems.
the united states could not remain separate.
the promotion of democracy is a false policy.
it is unsafe for one country to have too much power.
done

Explanation:

The author uses "illusion of isolation" to imply that the idea of the US remaining separate from global affairs was not a sustainable reality. In 1917, with the entry into World War I, the US could no longer maintain this false - sense of separation.

Answer:

The United States could not remain separate.